1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Nina [5.8K]
3 years ago
5

3 by 4 rectangle is inscribed in a circle. what's the circumfrence

Mathematics
1 answer:
Darina [25.2K]3 years ago
7 0
The trick here is the recognize that the diagonal length of the rectangle is the diameter of the circle. 

W = width of rectangle = 4
L = length of rectangle = 3
D = diagonal of rectangle

Using pythagorean theorem, we solve for D.

W^2 + L^2 = D^2
(4)^2 + (3)^2 = D^2
16 + 9 = D^2
25 = D^2
5 = D or -5 = D

Since D is a length, D must be positive. Therefore, D=5.

D = diagonal of the rectangle = 5

Since D is also the diameter of the circle AND the diameter of a circle is twice the radius, we have the following equation :

r = radius of circle = 1/2 D = 1/2 (5) = 2.5
C = circumference

C = 2 pi r = 2 pi (2.5) = 5 pi
You might be interested in
Suppose that Y varies directly with X andY equals 12 when X equals -2 what is X when Y equals -6
VLD [36.1K]

Answer:

x=1

Step-by-step explanation:

A direct variation equation has the following format:

y=kx

Where k is a constant.

We know that y is 12 when x is -2. Thus, substitute:

12=-2k

Divide both sides by -2:

k=-6

So, our direct variation equations is:

y=-6x

To find what x is when y equals -6, substitute in -6 for y:

-6=-6x

Divide both sides by -6:

x=1

So, our answer is 1 :)

4 0
3 years ago
A shoe store marks up is merchandise by 8%. what was the selling price of a shoe whose whole price is $24.50?
Serjik [45]

Final price = whole sale price+ 8% whole sale price   24.50 +(8/100 × 24.50) 24.50 + 196=$ 26.46

8 0
3 years ago
Your neighbor had to drop the selling price of her home from $180,000 to $165,000. What percent did the price get lowered? Round
Vikki [24]
You could do 165,000 divided by 180,000. This is 165000/180000, and that will give you the percentage that 165000 is of 180000 in decimal form, which is 0.9167.
Then we round to the nearest tenth, which is 0.92
0.92 as a percentage is 92%.
100% - 92% = 8%
The price of the home dropped by 8%.
8 0
3 years ago
Jane studies the properties of four ionic compounds: NaCl, KBr, Cas, and Mgo, as shown in the table.
Serhud [2]

Answer:

c

Step-by-step explanation:

3 0
3 years ago
Please help .........​
Grace [21]

Answer:

+10

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • Lines m and n are parallel lines cut by a transversal l.
    6·1 answer
  • 1.What is the simplified form of each expression?
    7·1 answer
  • 8 plates cost 48 dollars, how much do 20 plates cost?
    14·1 answer
  • PLEASE HELP!!!!
    9·2 answers
  • If h = 21 units and r = 7 units, what is the volume of the cone shown above?
    15·2 answers
  • Evaluate the difference quotient for the given function. Simplify your answer.
    9·1 answer
  • A company is making building blocks what is the length of each side of the block?
    13·2 answers
  • - It requires 1/4 of a credit to play a video game for one minute.
    7·1 answer
  • 1. The cylindrical container is four-fifths full of powder. Show ALL work for the following.
    7·1 answer
  • 20 POINTS! HELP!
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!